/*
 * Copyright 2009-2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.chinadrtv.batch.admin.jobs.ozing.question;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.SessionFactory;
import org.springframework.batch.item.ItemWriter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.orm.hibernate3.HibernateOperations;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.util.Assert;

import com.chinadrtv.user.dao.ozing.IOzingFreeOrderDao;
import com.chinadrtv.user.model.UserFreeOzingOrder;

public class FreeQuestionWriter implements ItemWriter<UserFreeOzingOrder> {

	private static final Log log = LogFactory.getLog(FreeQuestionWriter.class);

    @Autowired
	private IOzingFreeOrderDao freeOrderDao;

	private HibernateOperations hibernateTemplate;

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.hibernateTemplate = new HibernateTemplate(sessionFactory);
	}

    public void setFreeOrderDao(IOzingFreeOrderDao freeOrderDao) {
        this.freeOrderDao = freeOrderDao;
    }

    public void setHibernateTemplate(HibernateOperations hibernateTemplate) {
        this.hibernateTemplate = hibernateTemplate;
    }

    public void afterPropertiesSet() throws Exception {
		Assert.notNull(hibernateTemplate, "Hibernate session factory must be set");
		Assert.notNull(freeOrderDao, "Delegate DAO must be set");
	}

	/**
	 * @see org.springframework.batch.item.ItemWriter#write(java.util.List)
	 */
	public void write(List<? extends UserFreeOzingOrder> data) throws Exception {
		log.info("write-->" + data + "\t" + Thread.currentThread().getName());
		
		for (UserFreeOzingOrder order : data) {
			freeOrderDao.save(order);
		}
		
		try {
			hibernateTemplate.flush();
		}
		finally {
			// this should happen automatically on commit, but to be on the safe
			// side...
			hibernateTemplate.clear();
		}
	}
}
